Method for forming woven pile fabrics.



J. K. DALKRANIAN. METHOD FOR FORMING WOVEN PILE FABR'IGS. AlfPLIOATION FILED mm: 19, 1905.

V Patented May 25, 1909.

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JAMEs 'KARMI DALVKRANVIAN, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, 'ro UNITED STATES PERSIAN CARPET COMPANY, OF NEW YORK, N. Y., A CORPORATION OF I NEW YORK.

e To all whom it may concern:

Belit' known that I, JAMES KARMI DAL- KRANIAN, a citizen of the United States, and

new and improved method for forming a resident of the city of New York, borough of the Bronx, in the county and State of New York, have invented new and useful Improvements, in the Method for Forming Woven Pile Fabrics, of which the following isa full, clear, and exact description.

The object of the invention is to provide a woven pile fabrics of the oriental rug type, the weave having Persian knots which are formed mechanically in a very simple manner, and preferably Onaloom, such,for instance, as shownand described in the Letters Patentof theUnited States, No. 858,963

I granted to moon July 2, 1907.

ing drawingsforminga part of this specification, inwhich similar characters Of reference indicate corresponding parts in all the views.v

' Figures 1, 2, 3 and 4 are perspective views,

illustrating the formation of the weave; Fig.

- 5 is alike view, illustrating a modified form for the formation of the weave; and Fig. 6 is an enlarged plan viewof the finished fabric.

, warp threads at, a,

y In ,order' to carry the above-described method-into effect, I proceed in detail as follows:' f y In the drawings are illustrated a pair of ground warp threads a, a, a pile thread I), and sets of weft threads a, it being, however, understood that in practice a set of pile I threads I) selectedof any color and arranged according to a predetermined pattern, is interlooped-with a number of pairs of ground warp threads (1, a, and a set of weft threads 0 (preferably three in a set) are interwoven with .thegroundwarp threads a, a between I successive sets of pilethreads b to form the fabricshownin Fig. .6,

In order to understand the method of weaving thepile fabric, itis suflicient to describe the operation of asingle pile thread I) relative to its corresponding pair of ground As shown infFigJ the approximately Specification of Letters Patent.

7 Application filed June 19, 1905.

. METHOD FOR FORMING WOVEN PILE FABRICS.

Patented May 25, 1909.

Serial No. 265,887.

horizontally-disposed ground warp threads or, a of a pair of ground warp threads, and normally arranged arallel, are crossed, and then the pile thread is passed down between the crossed ground warp threads a, a, adjacent to the crossing a, it being understood that one end I) of the said pile thread I) is held in a tuft yarn tube or similar movable part d of the loom, and which tuft yarn tube, with the pile thread, is passed down between the ground warp threads (1, a, and then raised to the position shown in Fig. 1 to lift the pile thread extending between the crossed ground warp threads adjacent to the crossing o The ground warp threads a, a are now uncrossed by the use of a suitable shogging device, so that the several parts assume the position shown in Fig. 2; that is, the end I) of the pile thread extends upwardly on the outside of the ground warp thread a, and the loose end 6 of the said pile thread extends downwardly on the outside of the other ground warp thread a, while the middle portion 6 of the pile thread eXtends transversely between the ground warp threads at and a The tuft yarn tube at, and consequently the fixed end I) of the pile thread I) is now passed downward between the ground warp threads a, (1/, so that the end I) is completely looped around the ground warp thread a, and this end 1) extends between the two ground warp threads a, a and in the same direction as the other or loose end 6 as will be readily understood by reference to Fig. 3. While the tuft yarn tube (1 is in its lowermost position, the end I) is out, say at I);

that is, adjacent to the tuft yarn tube (1, and

then the tuft yarn tube (1 returns to an u permost position, thus leaving the pile t read interlooped with the ground warp thread a, a in the form of a Persian knot.

The weft threads of the set of weft threads 0 are now interwoven in the usual manner with the ground warp threads at, a, and then the ground warp threads (1, a are again crossed, as shown in Fig. 1 and the above operation is repeated to form another set of Persian knots on thepairs of ground warp threads.

Instead of moving the tuft yarn tube cl straight downward for forming a Persian knot in conjunction with the ground warp threads, as described, the tuft yarn tube may be moved upward from below the ground warp threads in the manner above described to accomplish the same result, as will be readily understood by reference to Fig. 5. In either case, it is essential, in order to form a Persian knot according to my method. that the ground warp threads (1, a are first crossed, then the pile thread passed between the crossed ground warp threads a, a adjacent to the crossing a after which the ground warp threads a, a are uncrossed and one end of the pile thread I) is passed between the ground warp threads to complete the Persian loop.

It is understood that the end I) of the pile thread is cut off a distance from the ground warp threads corresponding to the free end 5 of the pile thread, so that the pile ends produce a uniform pile face. The fabric produced in the manner described is an oriental weave having Persian knots, the pile face of the fabric being in any desired color and according to a predetermined pattern.

By the method described, I am enabled to produce an oriental weave having Persian knots in a very simple manner and with mechanical means of simple construction and operation.

Although I have described and give preference to the arrangement in first passing the pile thread between the crossed ground warp threads, and then uncross the ground warp threads and then pass one end of the pile thread between the uncrossed ground-warp threads to form the Persian knot, I may reverse the operation by first passing the pile thread between the uncrossed ground warp threads, then crossing the latter, and finally passing one pile end between the crossed ground warp threads.

The pile thread I) as shown extends approximately vertical or at right angles to the approximately horizontally arranged ground warp threads (4, a. From the foregoing it will be seen that one end of the pile thread is loose while the other end is supported, and the pile thread I) is passed twice between the ground warp threads a, a from the same direction, that is, once while the ground warp threads are crossed and once while they are uncrossed. It will also be noticed that when the pile thread I) is between the crossed ground warp threads (1, a and the latter are uncrossed, then the pile ends are on the outside of the corresponding ground warp threads at, a, as will be readily understood by reference to Fig. 2, and the now following operation of assing the supported end of the pile thread between the uncrossed ground -warp threads practically completes the formation of the Persian knot.

For the sake of brevity, use is herein made of the term uncrossed, which signifies the normal position of the ground warp threads a, a, that is, when the said ground warps are arranged parallel or one alongside the other.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent 1. The herein described method for weaving fabrics having Persian knots, consisting in alternately crossing a pair of normally parallel ground warp threads and returning the same to approximately parallel position and passing a pile thread twice between the ground warp threads, once while the ground warp threads are in the crossed position and once while the ground warp threads are in the normal position one end of the pile thread at its first passage between the ground warp threads being unsupported.

2. The herein described method for forming Persian knots in a fabric composed of pairs of ground warp threads and a pile thread, said method consisting in giving two movements to the said ground warp threads and giving two movements to the said pile thread, which latter has one end supported and the other end unsupported, one of the movements of the said pair of ground warps producing a crossed relation and the other movement producing an uncrossed relation of the ground warp threads, and the movements of the pile thread being both in the same direction between the ground warp threads, one of the pile thread movements being when the ground warp threads are in one of their mentioned positions, and the other movement of the pile thread being while the ground warp threads are in the other of their mentioned positions.

3. The herein described method for forming Persian knots in Woven pile fabrics, con sisting in crossing a pair of ground warp threads, passing the unsupported end of a pile thread between the ground warp threads of the said pair of ground warp threads and at angles thereto, one end of the pile thread being supported and the other end being unsupported; uncrossing the said ground warp threads, and passing the supported end of the pile thread between the ground warp threads of the said pair of ground warp threads and in the same direction in which the pile thread was first passed between the ground Warp threads.

4. The herein described method for forming Persian knots in Woven pile fabrics, consisting in crossing a pair of ground warp threads, then passinga pile thread between the ground warp threads of the said pair of ground warp threads, one end of the pile thread being loose and the other being supported, then uncrossing the ground warp threads, and passing the supported end between the uncrossed ground warp threads.

5. The herein described method for forming Persian knots in woven pile fabrics, consisting in crossing a pair of ground Warp threads, then passing a pile thread between the ground warp threads of the said pair of ground Warp threads, one end of the pile thread being loose and the other being sup ported, then uncrossing the ground warp threads,passing the supported end between the uncrosseol ground warp threads, and finally cutting the supported end of the pile thread.

6. The herein described method for form- ,ing Persian knots in woven pile fabrics, conpassing one end of the pile thread between the ground Warp threads of the said pair of ground warp threads and in the same dlrec- H tion in which the pile thread was first passed 7 between. the ground warp threads and inter- Weaving a plurality of weft threads with the said ground warp threads.

7. The herein described method for forming Persian knots in woven pile fabrics, eonsisting in crossing a pair of ground warp threads, passing a pile thread between the ground warp threads of the said pair of ground warp threads adjacent to the crossing and at angles to the ground warp threads, unorossing the said ground warp threads, and passing one end of the pile thread between the ground warp threads of the said pair of ground warp threads and in the same direction in which the pile thread was passed between the ground warp threads.

In testimony whereof I have signed my name to this specification in the presence of 35 two subscribing witnesses. I

JAMES KARMI DALKRANIAN. Witnesses:

THEo. G. Hosrnn, EVERARD B. MARSHALL. 

